Pipe-wrench.



Patented .luly I6, |901. J.' E. WILKISN.

PIP E W R E N C H.

(Application led De. 31, 1900.)

(No Model.)

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JOSEPH E; WILKISON, OF WELLSVILLE, OHIO, ASSIGNOR OF ONE-HALF TO S. M.FERGUSON, OF EAST LIVERPOOL, OHIO.

PIPEmWRENCl-l.

SPECIFICATION forming part of Letters Patent N o. 678,809, dated July16, 1901. Application led December 31, 1900. Serial No. 41,720. (Nomodel.)

To @ZZ whom it may concern:

Be it known that I, JOSEPH E. WILKIsoN, a citizen of the United States,residing at VVellsville, in the county of Columbiana and State of Ohio,have invented a new and useful Pipe-Wrench, of which the following is aspecication.

My invention is designed to form a simple, cheap, durable, andeasily-operated Wrench, and has for its object to so construct the samethat very few parts shall be used in its construction, thereby lesseningits liability of getting out of order, but at the same time keeping inview the form of Wrench to obtain the best results.

A further object of my invention is to so arrange the handle, stock, andbits as to enable the operator to secure the greatest distance of swingwhen working upon radiators or pipes that are closely connected or insuch positions that other wrenches have proved ineffectual even when theoperator has secured the desired grip upon the pipe.

These and various other objects and advantages of my invention willappear in the follow ing specification, reference being had to thedrawings iorming part thereof, in Which- Figure l is a perspective Viewof my improved wrench, showing the jaws gripped upon a pipe. Fig. 2 is alongitudinal section of the same, the handle being shown in elevation;and Figs. 3, 4, and 5 are details of the several parts detached.

In the drawings, A represents the handle of any suitable length andhaving at one end a head B, one side of which terminates in a claw B forengagement with a jaw or stock, and the opposite side of said headterminating in a lug B2, having a hole through which passes a bolt O,that securely holds a swinging jaw D to the lug. This jaw D has one endbifurcated, forming ears d, which straddle the lug B2, and through whichpasses the bolt C, thereby forming a swinging jaw that is at all timesheld in place. Upon the outer surface of the lug B2 and formed integraltherewith is an extension b, forming a stop to limit the outwardmovement of the jaw.

The jaw D has a semicircular recess d in its inner face, in which isfirmly held a semicircular bit E, made of tempered steel and having itsface serrated, as shown. Upon the outer end of the jaw is securelyriveted a yoke or clevis D, into which is designed to tit the outer endof a removable jaw F, whose inner end is bifurcated, forming ears ff,made to straddle the claw B to prevent any sidewise movement of the jawF when the wrench is in operation. The surface of the jaw between andimmediately in rear of the ends of the earsfis made of a less thicknessthan the ears and has its outer surface rounded to form a cam f', uponwhich the claw B engages to bind the jaws F and D together. The jaw F isalso litted with a bit-section G, similar in construction andarrangement to the bit E.

The operation of my improved Wrench is as follows: When a pipe, forinstance, is to be turned, the jaw D is put under the pipe and the endof the jaw F inserted in the clevis D', the bifurcated end dropped downover the claw B, the handle in the meantime being turned in suchposition as to allow the cam portion f' of the jaw to escape the pointof the claw. Then by raising the handle the claw engages the cam, whichfirmly closes the jaws together and upon the pipe, when by a furthermovement of the handle the pipe is easily turned.

I may state that the claw has its face that engages the cam tempered toavoid wear.

From the foregoing it will be seen that only the amount of pressure isput upon the pipe that is absolutely necessary to secure a tight gripand when that is attained the further movementof the handle will causethe pipe to turn.

My wrench may be fitted to any size pipe by using a removable jaw havinga larger or smaller bit-section, as the case may require, thus avoidingthe necessity of having several sizes of wrenches.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent of the United States, is-

l. A wrench comprising a handle, a swinging jaw held thereto, a clevisformed on the free end of said jaw and aremovable jaw having one enditting loosely in said clevis and its other end engaged by the handle toclose it, substantially as shown and described.

2. In a wrench, the combination of a handle having an enlarged head onone end thereA IOC of, one side of the head terminating in a, lug,'

the opposite side terminating in a claw, a jaw pivoted at one end to thelug and having itsl opposite end formed with a yoke, a removable jawheld at one end in said yoke and. having its opposite end bifurcated tostraddle the claw, and adapted to be engaged thereby, substantially asshown and described.

3. In a wrench, the Combination of a handle provided with a claw, a jawhaving ears at one end between which the handle is piv- JOSEPH E.WILKISON.

Vitnesses:

JNO. J. PURINTON, S. M. FERGUSON.

